Casing with reservoir and hand actuated discharge valve



y 1 9 2 N. s. GILBERT 2,602,946

CASING WITH RESERVOIR AND HAND ACTUATEI) DISCHARGE VALVE Filed: June 19,1947 2 SHEETS-Sl-iEET l INVENTOR NORMAN S. GILBERT July 15, 1952 N. s.GILBERT 2,602,946

CASING WITH RESERVOIR AND HAND ACTUATED DISCHARGE VALVE Filed June 19,1947 2 SHEETSSHEET 2 V 2Q r I 20 59 I '1! i 11" W 1mm 15 i i El INVENTOR17 NORMAN s. GILBERT :1 g F N W ATTORNEY Patented July 15, 1952 lJNITEDSTAT-ES PATENTQFFIQB CASING WITH RESERVOIR AND HAND AGTUATE-D DISCHARGEVALVE Norman S, Gilbert, Brooklyn, N. Y.

Application June 19, 1947, Serial No. 755.693

8 Claims. .1

This in e tion relates t hand awe-ted diee polishing m ohine su h heimheh y hees i polishing su faces o a y t p or e 2 $121. more pa culaly t e ih ehtioh eals with e machine which can be used as a handpolishin machine, that is to say here the machine can be conv n e tl a deoeil ehifie he e a surface being polished, the machine having a pair ofhand grip portions with .a control switch accessible to ,afingenqf onehandanda fluid release plunger accessible to the finger of another handwhen both hands are engaging the hand grip portionsof the machine. 4

The novel featnres of the invention will be best understood .from thefollowing description when taken together with the accompanying drawingsin which .certainembodiments of .the invention are disclosed, and inwhich the separa parts re desi nated .h eu ii hl re eren e characters inea h o th v ews a d inxwhieh Fig. 1 is a side View of thehandggrip an dcylinder side cfa machine made according to my invention, with part ofthe construction --bro ken away and in section. t

Fig. 2 is a plan view of the structure as seen in Fig. 1.

Fig. 3:18 anenlarged sectional viewen the line a a of Fig. 2,omitting-the polishing Pad.

Fig. 4 15 a section on the brolgen' line i-40f Fig. 3; and

Fig. 5 is a partial-sectienon the line 55 of Fig.3.

It is the purpose of myin-vention-to'provide a simple and economicallightweight constructed polishing machine which can-he convenientlyoperated --by hand in movementof the machine over a surface beingpolished-thusadapting-- the machine for polishing or buffingsurfacesofany type or kind.

Considering Fig. 3" of the drawing, it will be or casing. to inone'largediametercylinder of which is supportedan electric motor .[2. At. theother side :of the casingais a. smaller diameter cylinder, l3 forsupport ofthepolishingfluid .or V

other material it, used in. the operation of.-the machine. The twocylinders II and Bare joined Arranged upon the top ofthe cylinder side II of the casing is a dome s hapedgch 1.8 facilitatm ih rt hon min ra 9iheehe eh. andt cap includes two integral; and-oppositely extend- 5 5seen that themachine comprisesamain casting vnote i 3. i flwhie i o a sa t eele ifo ty a 2 in -shane hand rip no iiohs J9 and v;29. n F and 1ee ha the .ohhe edre p t ons 217 ec iv n t e heads o Joe 2. .52. whi hseeu t th ear? i p h e e densee th ade po tions the eas n at 2.51 16 Thcap 1. ba e ha hee ihe meuht h o on ehdo th .mote ehh i.1?hnd the e e o2.9 f t m to sh passe th ou h e s ih le bea in 30: h lowe ooriio e theeeih 1." as clearly seen in Fig. ,3. secured to the end 29 of th ho orhii i a .eirire .h eh whi fo the ma o pa t .disPnedouti e e -e th e sini .suh e tied i th easin hem :32 .ah ahothe v afile 3.3 eu pert t- Shaft.adieeen-t .eo1lar:. .ah '.th $e 'h a t p ev nt any, ess hl lhh i ehItem ent h u me t moto .ehahih ro the es hermediate th eylihde he tieh 11:4 h ow r p tion o th a ih h ee i-e es hea 35.

a enrehsed ih i .d i char nozzl :35 hav n reed fieh on 35 fitt n inthree sfiih d ee re i the casing asbyscrews 3M8. Thenoz e 36 has a reue dse h zeeeheh h ;.3.9 and. 1 f h oha g ehie th hezzl ie 1 ,hmihe feh e rov Ah h ho l zierm v.(hht a gi or st d o r at on o th ad su p rt n adriving disc Al. The glisc ,4] has npturnec1 n inw rdl exte din peripheal xfl h -e Q4 forming means for retaining the polishingpad o other poish h mh i ZLPQ or'membe Ae imol eomn ae r h o heav e hewooloth -e .hi ieihe i r hery es eh theeamearouho th ifleha when o ho pe h emhe .4 he esle rely $e i i l on .-o the pad or nember of the nozzle so that the fluidl4 canass subifst htiall oheo l onioth serieeeh me-me h i H '1 m-,asclearly seenat the leit The fluid cylinder I3 communicates with thebore I6 through a passage 50 which opens into an enlarged portion orside extension of the bore I6, as seen at 5I, at a point above where thebore I8 opens into the upper enlarged chamber 52 of the stud nozzle 36,as clearly seen in Fig. 3 of the drawing. It will thus be seen that asthe plunger valve I1 is raised, the fluid I4 is permitted to enter thechamber 52 and be discharged through the nozzle discharge 39.

The plunger valve has a transverse aperture 53 having a semi-circularenlargement 54 at one side thereof and the web I5 has an aperture 55registering with the plunger aperture, in which is mounted an operatingarm 56, which extends into the aperture 53 of the plunger valve I1 andis adapted to raise said valve against the action of a spring 51,seating on the upper end of the valve. The upper end of the spring ishoused in a bore 58 formed in the cap I8, as seen in Fig. 3.

The hand grip portions I9 and 20 are of channel cross sectional form inorder to lighten the same, and in the channel of the hand grip I9,adjacent the bore 58, is a long bearing portion 59 in which is mounted amanually operated plunger 60 having an enlarged fingerpiece head 6|. Tothe lower end of the plunger is pivoted the arm 56, as seen at 62. Itwill thus be seen that the spring 51 normally supports the plunger inraised position with the valve I! in closed position. By depressing uponthe fingerpiece 6|, the plunger rod 60 is moved downwardly and the valveI1 is moved upwardly against the action of the spring 51. In thisoperation the arm 56 has a free pivotal action in the aperture 55.

Arranged in the fluid cylinder I3 is a piston 63 which is held inpressure engagement with the fluid I4 through the medium of a spring 34seating'on the piston and on a detachable cap 65, having any suitablequick detachment with the upper open endof the cylinder I3, for example,by pins 66 engaging bayonet slots 61 in the cylinder I3. The cap 65 hasa center depending lug 6B apertured to receive one end of a chain orother flexible coupling 69, the other end of which is secured centrallyof the piston 63, as seen at III, in Fig. 3 of the drawing. The cap 65has a radially and upwardly extending fingerpiece portion IIfacilitating attachment and detachment thereof..

Upon removing the cap 65, the piston 63 may be drawn upwardly throughthe chain 89 in the operation of refilling the cylinder I3 with fluid,as at I4. The spring 64 will be tensioned to discharge substantially allof the fluid cylinder I3 and in normally filling or replenishing thesupply of fluid to the cylinder it is desirable to not fill the cylinderI3 more than approximately half full.

It will be apparent from a consideration of Figs. 2 and 3, that the handgrip portions I9 and 20 are disposed centrally and extend radially withrespect to the axis of rotation of the disc -4I upon the nozzle stud 36.Considering Fig. 1 of the drawing, it will be apparent that the lowerportion of the casing I terminates in a disclike portion 12, the upperedges of which are preferably rounded, as seen in said figure, and thecylinder portion II is offset outwardly with respect to this disc,whereas the cylinder I3 is disposed within the peripheral boundaries ofthe disc.

Secured to the hand grip portion 20 in substantially the same positionas assumed by the manual control plunger 60 is a standard electric 4switch I3 with which connects the electric extension cord I4 forproviding source of current supply to the motor of the machine.Extending from the switch are conductor wires I5 which extend into thecap I8 for coupling with the motor I2, as will be apparent. Thisconstruction is indicated in Fig. 2 of the drawing, but the detailsthereof are omitted from the other figures, as this wiring forms no partof the present invention.

One distinctive feature of my invention, however, resides in the factthat the two controls, namely the button GI and the switch I3 aredisposed on inner portions of the hand grips I9 and 20 so that ingrasping these hand grips, the thumbs of the hands can be utilized tocontrol stopping and starting of the motor and discharge of polishing orother fluid I4 through the nozzle discharge 3!! directly onto thesurface being polished. One advantage of this particular constructionresides in the fact that a definite control of the amount of polishingor other fluid supplied to the surface is maintained. This obviatesundue saturation of the polishing medium or member 43, maintaining thesame in at least a semi-dry state at all times.

While the machine has been shown and described as a polishing machine,it will be apparent that any type of facing material can be mounted uponthe disc 4| or attached to the frame 44. The assemblage comprising theframe 44, disc 4| and the bearing 41 is made detachable with respect tothe rest of the machine or the nozzle stud 36 through the medium of alock spring ring I6 engaging the annular recess 40, as clearly seen inFig. 3 of the drawing.

Considering Fig. 3 of the drawing, it will appear that the lower end ofthe cylinder I3 has a shoulder portion 11 eliminating downward movementof the piston 63, so as to avoid sticking of the piston in the cylinder,as will be apparent.

Having fully described my invention, what I claim as new and desire tosecure by Letters Patent is; 7

1. In a machine of the class described, a casing having two cylindersjoined by a connecting web, one of said cylinders being adapted tocontain an electric motor vertically disposed in said cylinder, theother cylinder forming a fluid reservoir, said web containing a valvebore, a plunger valve mounted in said bore and controlling dischargefrom said reservoir, a pair of hand grips on the casing centrallythereof, and manually actuated means on one of said hand grips formoving the plunger valve into open position in controlling discharge offluid from said reservoir.

2. In a machine of the class described, a casing having two cylindersjoined by a connecting web, one of said cylinders being adapted tocontain an electric motor vertically disposed in said cylinder, theother cylinder forming a fluid reservoir, said web containing a valvebore, a plunger valve mounted in said bore and controlling dischargefrom said reservoir, a pair of hand grips on the casing centrallythereof, manually actuated means on'one of said hand grips for movingthe plunger valve into open position in controlling discharge of fluidfrom said reservoir, and a spring in said bore and en gaging saidplunger valve to normally support the valve in closed position.

3. In a machine of the class described, a casing having two cylindersjoined by a connecting web, one of said cylinders being adapted tocontain an electric motor vertically disposed in said cylinder, theother cylinder forming a fluid reservoir, said web containing a valvebore, a plunger valve mounted in said bore and controlling dischargefrom said reservoir, a pair of hand grips on the casing centrallythereof, manually actuated means on one of said hand grips for movingthe plunger valve into open position in controlling discharge of fluidfrom said reservoir, and said hand grips constituting part of a coverforming a closure for said first named cylinder.

4. In a machine of the class described, a casing having two cylindersjoined by a connecting web, said web having a bore, the upper ends ofthe cylinders being open, one of said cylinders being adapted to containa vertically disposed motor in said cylinder, the other cylindercomprising a reservoir, a cap for the motor cylinder, a quick detachablecap for the reservoir cylinder, said first named cap having oppositelydirected hand grip portions arranged centrally of.

the casing and intermediate said cylinders, a valve in said borecontrolling discharge from said reservoir, and a coil spring in saidbore and normally supporting the valve in closed position.

5. In a machine of the class described, a casing having two cylindersjoined by a connecting web, said web having a bore, upper ends of thecylinders being open, one of said cylinders being adapted to contain avertically disposed motor in said cylinder, the other cylindercomprising a reservoir, a cap for the motor cylinder, a quick detachablecap for the reservoir cylinder, said first named cap having oppositelydirected hand grip portions arranged centrally of the casing andintermediate said cylinders, a valve in said bore controlling dischargefrom said reservoir, a coil spring in said bore and normally supportingthe valve in closed position, a manually operated plunger in one of saidhand grips, and an arm pivoted to said plunger and freely coupled withsaid valve.

6. In a machine of the character described, a casing having a pair ofcylinders spaced and joined by a web, the cylinders and web havin boresopening through the top thereof, one of said cylinders being adapted tocontain a vertically disposed motor in said cylinder, the other cylinderforming a reservoir having a discharge port communicating with said Webbore, means in the reservoir for pressure discharge of fluid therefrom,a cap closing said motor cylinder, said cap including a bore registeringwith the bore of said web, a'plunger valve and a coil spring in the weband cap bores, said valve normally closing discharge port, means formoving the valve into open position against the action of said spring, aquick detachable cap for the reservoir cylinder, and a pair of outwardlyand downwardly extending hand grips integral with the first named capand arranged centrally of said casing.

7. In a machine of the character described, a casing having a pair ofcylinders spaced and joined by a Web, the cylinders and web having boresopening through the top thereof, one of said cylinders being adapted tocontain a vertically disposed motor in said cylinder, the other cylinderforming a reservoir having a discharge port communicating with said webbore, means in the reservoir for pressure discharge of fluid therefrom,a valve in the web portion, a cap closing said motor cylinder, said capincluding a bore registering with the bore of said web, a quickdetachable cap for the reservoir cylinder,

a pair of outwardly and downwardly extending hand grips integral withthe first named cap and arranged centrally of said casing, and a coilspring in the cap and web bores and engaging said valve to normallysupport the valve in position closing said discharge port.

8-. In a machine of the character described, a casing having a pair ofcylinders spaced and joined by a web, the cylinders and web having boresopening through the top thereof, one of said cylinders being adapted tocontain a vertically disposed motor in said cylinder, the other cylinderforming a reservoir having a discharge port communicating with said webbore, means in the reservoir for pressure discharge of fluid therefrom,a valve in the web portion, a cap closing said motor cylinder, saidcapincluding a bore registering with the bore of said web, a quickdetachable cap for the reservoir cylinder, a pair of outwardly anddownwardly extending hand grips integral with the first named cap andarranged centrally of said casing, a coil spring in the cap and webbores and engaging said valve to normally support the valve in positionclosing said discharge port, and manually operated means in one handgrip portion for actuating said valve.

NORMAN S. GILBERT.

REFERENcEs CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 972,729 Strange Oct. 11, 1910995,179 Puggel June 13, 1911 1,198,646 Maddox Sept. 19, 1916 1,216,340Mattison Feb. 20, 1917 1,598,411 Allen Aug. 31, 1926 1,622,182 CowanMar. 22, 1927 1,636,437 Riedel July 19, 1927 1,641,103 Small Aug. 30,1927 1,667,329 Menzel Apr. 24, 1928 1,691,523 Maycen Nov, 13, 19281,794,462 Johnson Mar. 3, 1931 1,847,323 Yutzler Mar. 1, 1932 1,952,910Decker Mar. 27, 1934 1,975,380 Streich Oct. 2, 1934 2,248,699 FinnellJuly 8, 1941 2,289,117 Harrison July 7, 1942 2,311,879 Schultze Feb. 23,1943 2,395,537 Crosby Feb. 26, 1946 2,443,001 Frendo June 8, 1948FOREIGN PATENTS Number Country Date 322,697 Great Britain Dec. 12, 1929460,321

France Oct. 2, 1913

